Title:
STACKED LC FILTER
Document Type and Number:
WIPO Patent Application WO/2013/069419
Kind Code:
A1
Abstract:
Provided is a stacked LC filter resistant to effects of stray capacitance which occur between a surface electrode. This stacked LC filter (1) is provided with: a laminate (10), in which a plurality of dielectric layers (11) in which internal electrode patterns have been formed on the surface thereof have been stacked so that the dielectric layers (11) and the internal electrode patterns configure a coil and a capacitor, and which has two main surfaces that are perpendicular to the stacking direction; and a surface electrode (41) formed upon the main surface of the laminate (10). The filter is characterized in that the relative permittivity of the dielectric layer from the main surface upon which the surface electrode (41) has been formed to the internal electrode pattern closest to the main surface is lower than the relative permittivity of the dielectric layers configuring the capacitor.
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Inventors:
KIKUCHI KENICHIRO (JP)
MASUDA HIROSHI (JP)
MASUDA HIROSHI (JP)
Application Number:
PCT/JP2012/076756
Publication Date:
May 16, 2013
Filing Date:
October 17, 2012
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H7/01; H01F27/00; H01G4/40; H03H7/09
Domestic Patent References:
| WO2010100997A1 | 2010-09-10 |
Foreign References:
| JP2005064267A | 2005-03-10 | |||
| JP2007116554A | 2007-05-10 | |||
| JP2008147349A | 2008-06-26 | |||
| JP2011114628A | 2011-06-09 | |||
| JP2004312065A | 2004-11-04 |
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